package com.xp.flower.qsd.share.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

public class HttpUtils
{
	public static final String UTF_8 = "UTF-8";
	public static final String GBK = "GBK";
	public static final String GB2312 = "GB2312";
	public static final String GET = "GET";
	public static final String POST = "POST";
	
	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl 请求地址
	 * @param requestMethod 请求方式（GET、POST）
	 * @param outputStr 提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr)
	{
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		
		try
		{
			TrustManager[] tm = { new MyX509TrustManager() };						// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			SSLSocketFactory ssf = sslContext.getSocketFactory();					// 从上述SSLContext对象中得到SSLSocketFactory对象

			URL url = new URL(requestUrl);
			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
			httpUrlConn.setSSLSocketFactory(ssf);

			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);
			httpUrlConn.setRequestMethod(requestMethod);							// 设置请求方式（GET/POST）

			if (GET.equalsIgnoreCase(requestMethod))
			{
				httpUrlConn.connect();
			}

			// 当有数据需要提交时
			if (null != outputStr)
			{
				OutputStream outputStream = httpUrlConn.getOutputStream();
				outputStream.write(outputStr.getBytes(UTF_8));					// 注意编码格式，防止中文乱码
				outputStream.close();
			}

			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(inputStream, UTF_8);
			BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

			String str = null;
			while ((str = bufferedReader.readLine()) != null)
			{
				buffer.append(str);
			}
			bufferedReader.close();
			inputStreamReader.close();
			// 释放资源
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			jsonObject = JSON.parseObject(buffer.toString());
		}
		catch (ConnectException ce)
		{
			System.out.println("Weixin server connection timed out.");
		} 
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return jsonObject;
	}
}
